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IEC/TC 112/PT 61857-41
Electrical insulation systems - Procedures for thermal evaluation - Part 41: Specific requirements for electrical insulation systems for use in dry-type high-voltage transformers with operating voltages of 1kV and above
IEC 3C/945/FDIS
IEC 60417: Graphical symbol for use on small transformers 5941 Pr: Auto-transformer, general
IEC 3C/947/FDIS
IEC 60417: Graphical symbol for use on small transformers 5943 Pr: Auto-transformer, short-circuit proof
IEC 3C/946/FDIS
IEC 60417: Graphical symbol for use on small transformers 5942 Pr: Auto-transformer, non-short-circuit proof
prEN 50216-6
Power transformer and reactor fittings - Part 6: Oil pressure gauges - Differential pressure gauges
IEC 3C/943/FDIS
IEC 60417: Graphical symbol for use on small transformers 5221 / 02: Isolating transformer, general
IEC 3C/944/FDIS
IEC 60417: Graphical symbol for use on small transformers 5222 / 02: Isolating transformer, general
IEC 3C/952/FDIS
IEC 60417: Graphical symbol for use on small transformers 5948 Pr: Perturbation attenuation isolating transformer, general
prEN 50216-10-5
Power transformer and reactor fittings - Part 10: Cooling equipment - Section 5: Oil flow indicators for power transformers
IEC 3C/949/FDIS
IEC 60417: Graphical symbol for use on small transformers 5945 Pr: Isolating transformer, short-circuit proof
